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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
29/07/2019 |
Data da última atualização: |
30/10/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SATO, M. K.; LIMA, H. V. de; COSTA, A. N.; RODRIGUES, S.; PEDROSO, A. J. S.; MAIA, C. M. B. de F. |
Afiliação: |
Michel Keisuke Sato, UFRA; Herdjania Veras de Lima, UFRA; Aline Noronha Costa, UFRA; Sueli Rodrigues, UFPI; Augusto José Silva Pedroso, IFPA; CLAUDIA MARIA BRANCO DE F MAIA, CNPF. |
Título: |
Biochar from açaí agroindustry waste: study of pyrolysis conditions. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Waste Management, v. 96, p. 158-167, Aug. 2019. |
DOI: |
10.1016/j.wasman.2019.07.022 |
Idioma: |
Inglês |
Conteúdo: |
The production chain of Acai (Euterpe oleracea Mart) has a high economic representativeness in the Brazilian Amazon. However, wastes generated from the processing of the fruit has been deliberately discarded in the environment, causing health risks to the population due to environmental contamination or the proliferation of disease agents. Thus, the production of biochar arises as an alternative to the irregular disposal of these residues. The objective of this work was to evaluate the conditions (temperature and residence time) to produce biochar from Acai processing residues and its potential for use as soil conditioner in the Amazon region. Acai seeds were carbonized using the process of muffle pyrolysis at different temperatures and residence times. Biochars were evaluated for their physical and chemical properties and hydrophobicity. The temperature had a greater influence than the residence time for most parameters. Higher values of pH, higher recalcitance and greater potential for water retention were observed for the biochar produced at temperatures of 600 and 700 °C. At lower temperatures (300 and 400 °C), a greater yield was observed, however, in this condition, the material presented an extremely hydrophobic character. By considering the favorable agronomic characteristics of biochar, the temperature of 600 °C and residence time of 60 min are the most suitable conditions for the production of biochar from Acai seeds. |
Palavras-Chave: |
Black carbon; Hidrofobicidade; Pyrolysis temperature; Residence time; Temperatura de pirólise. |
Thesagro: |
Euterpe Oleracea. |
Thesaurus Nal: |
Biochar; Hydrophobicity. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02310naa a2200289 a 4500 001 2110942 005 2019-10-30 008 2019 bl uuuu u00u1 u #d 024 7 $a10.1016/j.wasman.2019.07.022$2DOI 100 1 $aSATO, M. K. 245 $aBiochar from açaí agroindustry waste$bstudy of pyrolysis conditions.$h[electronic resource] 260 $c2019 520 $aThe production chain of Acai (Euterpe oleracea Mart) has a high economic representativeness in the Brazilian Amazon. However, wastes generated from the processing of the fruit has been deliberately discarded in the environment, causing health risks to the population due to environmental contamination or the proliferation of disease agents. Thus, the production of biochar arises as an alternative to the irregular disposal of these residues. The objective of this work was to evaluate the conditions (temperature and residence time) to produce biochar from Acai processing residues and its potential for use as soil conditioner in the Amazon region. Acai seeds were carbonized using the process of muffle pyrolysis at different temperatures and residence times. Biochars were evaluated for their physical and chemical properties and hydrophobicity. The temperature had a greater influence than the residence time for most parameters. Higher values of pH, higher recalcitance and greater potential for water retention were observed for the biochar produced at temperatures of 600 and 700 °C. At lower temperatures (300 and 400 °C), a greater yield was observed, however, in this condition, the material presented an extremely hydrophobic character. By considering the favorable agronomic characteristics of biochar, the temperature of 600 °C and residence time of 60 min are the most suitable conditions for the production of biochar from Acai seeds. 650 $aBiochar 650 $aHydrophobicity 650 $aEuterpe Oleracea 653 $aBlack carbon 653 $aHidrofobicidade 653 $aPyrolysis temperature 653 $aResidence time 653 $aTemperatura de pirólise 700 1 $aLIMA, H. V. de 700 1 $aCOSTA, A. N. 700 1 $aRODRIGUES, S. 700 1 $aPEDROSO, A. J. S. 700 1 $aMAIA, C. M. B. de F. 773 $tWaste Management$gv. 96, p. 158-167, Aug. 2019.
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Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
14/07/2007 |
Data da última atualização: |
21/10/2009 |
Autoria: |
FERRA, J. de C.; SERENO, J. R. B. |
Título: |
Inseminação artificial em ovinos. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2006. |
Páginas: |
25 p. |
Série: |
(Embrapa Cerrados. Documentos, 156). |
Idioma: |
Português |
Conteúdo: |
ABSTRACT: The aim of this review is to show and illustrate an way clear and objective of the aspects involved in the artificial insemination in sheep. In this species the potential is great, therefore it is early in its productive and reproductive aspects, with eminence to the short interval between generations. In the program of artificial insemination (AI) the evaluation of the reproductive male is important and testicle, scrotal sac, penis and prepuce must be observed, and still, good libido, masculine aspects and espermograma inside of the normality standards. Some forms of collection and semen manipulation are described. The females must be selected by weight and age, or when reach 65% a 70% of adult weight, and that form reaches the sexual maturity. Beyond that the gynecological evaluation, verifying womb, cervix and vagina. The approaches of AI commented in that review are: vaginal, cervical, transcervical and intrauterine. They are related still the estrus induction and synchronization as tool for the intensification of the reproductive management, like: male effect, progestagenos, prostaglandina and their analogous synthetic. |
Thesagro: |
Melhoramento Genético Animal; Ovelha; Ovino; Reprodução; Reprodução Animal. |
Thesaurus NAL: |
animal breeding; animal reproduction; artificial insemination; sheep. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/27833/1/doc_156.pdf
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Marc: |
LEADER 01824nam a2200253 a 4500 001 1570019 005 2009-10-21 008 2006 bl uuuu u0uu1 u #d 100 1 $aFERRA, J. de C. 245 $aInseminação artificial em ovinos. 260 $aPlanaltina, DF: Embrapa Cerrados$c2006 300 $a25 p. 490 $a(Embrapa Cerrados. Documentos, 156). 520 $aABSTRACT: The aim of this review is to show and illustrate an way clear and objective of the aspects involved in the artificial insemination in sheep. In this species the potential is great, therefore it is early in its productive and reproductive aspects, with eminence to the short interval between generations. In the program of artificial insemination (AI) the evaluation of the reproductive male is important and testicle, scrotal sac, penis and prepuce must be observed, and still, good libido, masculine aspects and espermograma inside of the normality standards. Some forms of collection and semen manipulation are described. The females must be selected by weight and age, or when reach 65% a 70% of adult weight, and that form reaches the sexual maturity. Beyond that the gynecological evaluation, verifying womb, cervix and vagina. The approaches of AI commented in that review are: vaginal, cervical, transcervical and intrauterine. They are related still the estrus induction and synchronization as tool for the intensification of the reproductive management, like: male effect, progestagenos, prostaglandina and their analogous synthetic. 650 $aanimal breeding 650 $aanimal reproduction 650 $aartificial insemination 650 $asheep 650 $aMelhoramento Genético Animal 650 $aOvelha 650 $aOvino 650 $aReprodução 650 $aReprodução Animal 700 1 $aSERENO, J. R. B.
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